THE HAWAIIAN SUGAR-CANE BORER. 35 
THE HAWAIIAN SUGAR-CANE BORER. 
([Sphenophorus] Rhabdocnemis obscurus Boisd.) 
GENERAL CHARACTERISTICS. 
The suear-cane “‘borer” ([Sphenophorus| Rhabdocnemis obscurus 
Boisd.) (fig. 4), infesting the cane stalk in Hawaii is the erub of a beetle 
belonging to the weevil family Calandride. The sugar-cane stalk- 
borer of the southern United States is the caterpillar of a moth, 
Fie. 4.—The Hawaiian sugar-cane borer ([Sphenophorus] Rhabdocnemis obscurus): 1, Eggs, natural size. 
2, Eggs in situ, much enlarged: a, Section of egg passage with egg, c; b, egg placed unusually near the 
rind, d. 8, Larve, just hatched and older, natural size. 4, Full-grawn larva, natural size. 5, Larva, 
side view, enlarged: a, Spiracles; b, cervical shield. 6, Larva, front view, enlarged. 7, Pupa, enlarged; 
a, Rostrum or beak; b, antenna; c, elytron or wing cover; d, folded wing. 8, Pupal case or cocoon, 
enlarged. 9, Adult, enlarged. (After Terry.) 
Datrea saccharalis Fab. Entomologically the two species are 
widely separated, belonging to entirely different orders of insects, but 
in the character of their injury to the cane stalk these two insects 
are quite similar—that is, they both develop within the cane stalk, and 
